So I'm a sophmore in High School, and cuta bunch of lawns. Bought a 32" Exmark mower back in April, no problems except for small oil leak, so bring it in to get tuned up. No problems. Last week ago, (about 2 months or so since tune up), I hear a really weird noise. Doesn't sound good, so I bring it to local repair shop (Robies in Medford NJ). I get a call from them today, telling me that the weird noise is the sound of the engine about to blow. (when I bought the mower the guy said there weren't any problems, recently replaced transmission, and about 7 years old. Repair shop tells me the mower is AT LEAST 15 years old. So they give me a quote on replacing the mower, a new one would cost 900 plus labor. For a 13hp engine. My question is would you suggest replacing the mower? Or shop around for a new used mower? Keep in mind I bought the mower for about 700, and put about 3-400 into it between parts, tune ups, accesories. What do you suggest I do?